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(************************************************************************)
(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015     *)
(*   \VV/  **************************************************************)
(*    //   *      This file is distributed under the terms of the       *)
(*         *       GNU Lesser General Public License Version 2.1        *)
(************************************************************************)

open Names
open Term
open Pattern
open Genredexpr
open Reductionops
open Locus

type red_expr =
    (constr, evaluable_global_reference, constr_pattern) red_expr_gen
 
val out_with_occurrences : 'a with_occurrences -> occurrences * 'a

val reduction_of_red_expr :
  Environ.env -> red_expr -> e_reduction_function * cast_kind

(** [true] if we should use the vm to verify the reduction *)

(** Adding a custom reduction (function to be use at the ML level)
   NB: the effect is permanent. *)
val declare_reduction : string -> reduction_function -> unit

(** Adding a custom reduction (function to be called a vernac command).
   The boolean flag is the locality. *)
val declare_red_expr : bool -> string -> red_expr -> unit

(** Opaque and Transparent commands. *)

(** Sets the expansion strategy of a constant. When the boolean is
   true, the effect is non-synchronous (i.e. it does not survive
   section and module closure). *)
val set_strategy :
  bool -> (Conv_oracle.level * evaluable_global_reference list) list -> unit

(** call by value normalisation function using the virtual machine *)
val cbv_vm : reduction_function